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Finding the Fourth Proportional to 455,169.29, 628,133.02 and 251,220.60

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Solution

The fourth proportional to 455,169.29, 628,133.02 and 251,220.60 is: 346,684.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,169.29 : 628,133.02 = 251,220.60 : x
  2. Step 2: Convert to fraction form
    455,169.29/628,133.02 = 251,220.60/x
  3. Step 3: Cross multiply
    455,169.29x = 628,133.02 × 251,220.60
  4. Step 4: Simplify right side
    455,169.29x = 157,799,953,536.16
  5. Step 5: Solve for x
    x = 157,799,953,536.16/455,169.29
  6. Step 6: Final answer
    x = 346,684.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.